I think it would have been more common in Roman times than in the Middle Ages. Rome caused people to move around a lot. Well, Rome caused people to be able to move around a lot with roads and whatnot. After its collapse, the world was a lot larger.
Also, IIRC Ethopia's best era was behind it by the high Middle Ages, which is what I take for the real-world inspiration for GoT
I think it would have been more common in Roman times than in the Middle Ages. Rome caused people to move around a lot. Well, Rome caused people to be able to move around a lot with roads and whatnot. After its collapse, the world was a lot larger.
Also, IIRC Ethopia's best era was behind it by the high Middle Ages, which is what I take for the real-world inspiration for GoT
That would make sense. Thanks for clarifying